Security Guards
To dream of a security guard represents caution or carefulness that your actions stay within certain bounds. Making sure you don't go to far with something. It may also reflect someone in your life that is acting as a chaperone or supervisor. A person or situation that's maintaining boundaries.
Example: A young man dreamed of talking to a security guard. In waking life he had an argument with someone and was being very cautious about not speaking to them again. The security guard reflected how careful he was being about avoiding the other person.